For battery drills and drivers Makita because they have good power, 20-30 minute charge times (time depends on amp hours but regardless they have the best batteries on the market right now in my opinion), and they last in a professional setting. For mixing drills Rigid, great performance and power. Mine is about 14 years old and has mixed enough thinset to install square miles of tile as well as quite a bit of joint compound. Disclaimer on the Rigid; mine is older and USA made, I have been told the China made models carried now in the box stores do not hold up as well. Hammer drills I prefer Dewalt for light duty (up to 1 inch holes) and Hilti for heavy duty demolition, coring (through concrete from 6 inches up to about 24-30 inches note that this is not done in hammer mode), holes over 1 inch. Standard plug in 3/8 and 1/2 chuck I use Dewalt due to their reliability and power. They also work well for coring concrete up to about 6 inches and tile up to about 4 inches (Honestly I'm more likely to use my Makita's for tile or holes under 3 inches in concrete, brick, or block. As far as right angle drills I use Milwaukee exclusively, can't beat them on power and reliability. For bench top drill press I use a belt driven Hitachi, it performs most of my shop needs adequately and doesn't take up a lot of space. When I need more stroke or power I use a friends industrial grade floor mounted delta.